Yo-yo



FIG. 1 is an exploded front elevational view of a yo-yo showing my new design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being identical;

FIG. 3 is an exploded right rear perspective view thereof; and,

FIG. 4 is an exploded left, front perspective view thereof. 

The ornamental design for a yo-yo, as shown and described. 